High-reliability mine cable

Abstract

The invention relates to a high-reliability mine cable. The high-reliability mine cable comprises cable cores, a filled layer, a waterproof coating, a lapping layer, an inner sheath, a steel wire armoured layer and an outer sheath, wherein the filled layer wraps the cable cores; the waterproof coating is coated outside the filled layer; the lapping layer is lapped outside the waterproof coating; the inner sheath is extruded outside the lapping layer; the steel wire armoured layer is wrapped outside the inner sheath; the outer sheath is extruded outside the steel wire armoured layer; the cable cores comprise three power cable cores and three control cable cores; the power cable cores are each composed of a conductor and an insulation projective layer extruded outside the conductor; and the control cable cores are each composed of a silver-plated soft round copper wire conductor, an insulation layer extruded outside the silver-plated soft round copper wire conductor, a copper strip shielding layer wrapped outside the insulation layer, and a polyimide adhesive tape lapping layer lapped outside the copper strip shielding layer. The high-reliability mine cable disclosed by the invention has the characteristics of being excellent in heat resistance, oil resistance, corrosion resistance and cold resistance, outstanding in physical and mechanical property, convenient to install, safe to use, reliable to operate, and excellent in environmental protection property, flame resistance and ageing property; and, when the cable burns, no corrosive gas, such as HCL, is released.

Description

technical field [0001] The invention relates to a cable, in particular to a high-reliability mining cable. Background technique [0002] The characteristic of flame retardant cable is to delay the spread of flame along the cable so that the fire will not expand. Because of its low cost, it is a cable variety widely used in fireproof cables. Whether it is a single cable or a bunch of laying conditions, the flame spread can be controlled within a certain range when the cable burns, so it can avoid major disasters caused by fire and delay, thereby improving the fire protection level of the cable line. The feature of the halogen-free low-smoke flame-retardant cable is that it not only has good flame-retardant properties, but also does not contain halogen, which is less corrosive and toxic when burned, and produces a very small amount of smoke, thereby reducing Damage to people, instruments, and equipment is conducive to timely rescue in case of fire. Although it has good flame...

AI Technical Summary

Problems solved by technology

The feature of the halogen-free low-smoke flame-retardant cable is that it not only has good flame-retardant properties, but also does not contain halogen, which is less corrosive and toxic when burned, and produces a very small amount of smoke, thereby reducing Damage to people, instruments, and equipment is conducive to timely rescue in case of fire. Although it has good flame retardancy, corrosion resistance, and very little smoke concentration, its mechanical and electrical properties are slightly worse than ordinary cables.

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